Market Segment:
Large displacement British motorcycle, performance oriented three-cylinder sportbike
Competitors:
Norton Commando, Kawasaki Z1, Honda CB750 Four, BMW R75/5
Engine Configuration:
Inline three-cylinder, transverse-mounted
Performance Focus:
Designed for high performance and a powerful riding experience
Design Heritage:
Evolution of Triumph's parallel twin heritage, aiming to compete with Japanese multi-cylinder offerings
Engine System:
Complete overhaul, disassembly, assembly, adjustment, troubleshooting, performance tuning
Fuel System:
Carburetor service ( Amal Mk II Triple), fuel tank, fuel lines, fuel pump
Ignition System:
Ignition timing, spark plugs, coils, distributor (if applicable), electronic ignition conversion notes
Transmission System:
Gearbox disassembly, assembly, gear selection, clutch operation, lubrication
Chassis And Frame:
Frame inspection, steering head bearings, swinging arm lubrication and bearing service
Suspension System:
Front fork service (oil changes, seal replacement), rear shock absorber adjustment and overhaul
Braking System:
Front disc brake caliper service, brake fluid replacement, rear drum brake adjustment
Electrical System:
Wiring diagrams, lighting circuits, charging system (alternator/generator), starter motor, battery maintenance
Bodywork And Trim:
Fender removal/installation, seat removal/installation, fuel tank mounting, side panel attachments
Maintenance:
Routine servicing, lubrication schedules, oil changes, filter replacements, chain adjustment
Troubleshooting:
Diagnostic procedures for common starting, running, and electrical issues
Repair:
Step-by-step repair instructions for all major components and systems
Disassembly:
Detailed procedures for taking apart all motorcycle components for inspection and repair
Assembly:
Comprehensive instructions for reassembling the motorcycle, including torque specifications
Adjustments:
Precise instructions for adjusting carburettors, ignition timing, brakes, and clutch
Depth Of Coverage:
Comprehensive, covering from basic maintenance to complete engine and gearbox rebuilds
Diagrams And Illustrations:
Detailed pictorial diagrams, exploded views, and photos to guide repair procedures
Special Tools:
Identification and usage of specific Triumph service tools required for certain procedures
Specifications:
Inclusion of service data, tightening torques, wear limits, and factory specifications
Engine Type:
Inline three-cylinder, four-stroke
Displacement:
740 cc (740cc)
Bore X Stroke:
67 mm x 70 mm
Horsepower:
57 hp @ 7,250 rpm (approximate)
Torque:
57 lb-ft @ 5,500 rpm (approximate)
Carburetors:
3 x Amal Mk II Concentric 30mm (standard)
Ignition Type:
Coil and distributor (early models), Magneto ignition (later models, or with specific kits)
Oil Capacity:
Approx. 5.5 pints (2.6 liters)
Recommended Oil Viscosity:
SAE 20W-50 (for general use, consult manual for specific conditions)
Oil Change Interval:
Every 3,000 miles or 6 months (typical for the era, consult manual for exact)
Major Service Interval:
Every 6,000 miles (includes valve clearance checks, tune-up)
Fork Oil Type:
Triumph recommends specific fork oil, often a light-weight suspension fluid (e.g., 10W or 20W, consult manual)
Engine Vibrations:
Characteristic of the triple engine, can be mitigated with proper balancing and maintenance.
Oil Leaks:
Common with older British motorcycles; gasket and seal integrity is crucial.
Carburetor Synchronization:
Requires regular synchronization of the three Amal carburetors for optimal performance.
Electrical Reliability:
Early electrical systems can be prone to issues; maintaining clean connections and battery health is vital.
Manufacturer Origin:
United Kingdom
Marque Legacy:
Triumph Motorcycles has a long and storied history, particularly known for its parallel-twin motorcycles like the Bonneville.
Development Context:
Developed as Triumph's answer to the increasing popularity of multi-cylinder Japanese motorcycles, aiming to offer superior performance and handling.
Initial Release:
The T150 Trident was initially introduced in 1968 but the T150V model with improved features and styling appeared in 1970/1971.
Production Period:
1971-1974 (for the T150V variant)
Manufacturing Plant:
Meriden Works, Coventry, England
